Electric switch.



i N0. 893,160. PATENTEDJULY 14, 1908.

\ DfE.GRAY.

ELECTRIC SWITCH. APPLICATION FILED APR. 26, 1905. RENEWED JUNE 29, 1907.

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No. 898,160. PATENTED JULY 14, 1908.

D. E. GRAY.

ELECTRIC SWITCH.

APPLICATION FILED APR. 26,1905. RENEWED JUNE 29, 1907.

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WITNESSES; I INVENTOR.

Umrnn STATES PATENT OFFICE.

DAVID E. GRAY, OF YORK, Y.

ELECTRIC SWITCH.

Specification of Letters Patent.

Patented July 14, 1908.

Application filed April 26, 1905, Serial No. 257,489. Renewed June 29, 1907. W ScrialNc. 381,548.

T 0 all whom it may concern:

Be it known that 1, DAVID E. GRAY, a citizen of the United States, residing atthe city, county, and State of New York, have invented certain new and useful Improvements in Electric Switches, of which the following is a full, clear, and exact description.

My invention relates to improvements in electric switches, and particularly to small arm or lever switches. It will be obvious, however, that the size of the switch is immaterial.

The object of the invention is to provide a simple construction which cannot be readily tampered with or put out of order, but which may be readily adjusted for providing instant connection with a circuit'from one or more batteries, either singly, in. series, or in multiple.

The two accompanying sheets of drawings illustrate a construction for carrying out the principles of my invention.

Briefly, it may be said to consist of a base member, a stationary main terminal, a movable plate terminal, which may be adjusted so as to permit throwing of either one of two batteries into circuit, or'both batteries in circuit in multiple, or both batteries in circuit in series, and a switch lever for connecting the terminals at will. The adjustable contact member may also be removed from the base so as to prevent tampering with the switch when it is not desired to have the circuits'closed. I v

Figure 1 is a plan view of a switch embodying the improvements of my invention,

shown with simple circuit connections so that two batteries may be thrown into circuit alone or in multiple. tional view of the same on a vertical plane. Fig. 3 is a detail on a large scale showing the movable terminal plate. Fig. 4 is a detail end view of the post of the same. Fig. 5 is a detail side view of one of the contact arms.

Fig. 6 is a detail end view of the other con-- tact arm. Fig. '7 is a bottom view eta-switch embodying the improvements of my invention, with connections for permitting two batteries to be thrown into circuit either singly, in multiple, or in series. Fig. 8 is a sectional view of the same taken on the plane of the line X--X of Fig. 7.

#1 and #2 represent batteries or sets of batteries, which it is desired to connect in circuit with some device such as a spark coil 3, where the work is to be performed. lt is Fig.2isase-.

circuit, sometimes the other, and sometimes both batteries. By my construction this may be done in a very simple manner. Fig. 1 illustrates circuits necessary for connecting these batteries either singly or in multiple. By the circuit shown in Fig. 7 the batteries may be further combined in series. The visible accessible parts of'the device, how ever, are the same for either method of con nection, the only dilierence being in the connections and in the extent of adjustment of one of the terminal members. 1

{i is a base conveniently of insulating material for carrying the various parts of the switch proper.

5 represents the main terminal which is connected to the work3.

6 represents a contact plate, which is pro vided with means of connection with the other leads of the batteries.

7 is a swinging switch lever for connecting the main terminal to the contact plate. The terminal plate 6 is preferably provided with a roove havin a shar outside ed e or wall for the better holding the switch lever in place.

8 is a stop pin for the switch lever in its off position.

9 is a sto pin carried by the terminal plate 6 for limiting the movement of the switch lever in the on position.

iO'and 11. are clamping posts or terminals for the battery leads.

T2 and 13 are spring contact members connccted respectively to the posts 10 and 11 and arranged concentrically with the pivot post 14 of the member 6. The contact members 22 and 23 are connected together by the arm 24 in the multiple and #1 positions of the switch, while the contact members-12 and 22 are connected by the arm 24 in the the members 5 and 6, battery #1. is in circuit with the work 3. \Vhen the arm l 5 engages the contact member 18, battery #2 is adapted to be thrown in or out of circuit by the simple operation of the lever 7. When'the arm 15 bridges the two contact members 12 and 13, both batteries #1 and #2 are-in circuit in parallel with the work.

If it is desired to wire the switch so that the batteries in addition to multiple connection may have series connection, the circuit will be as shown in Fig. 7.

20 and 21 are clamping posts or terminals for the batteryleads. 22 and 23 are spring contact members connected thereto respectively.

24 is an arm carried by the post 14, but insulated therefrom, and having a shoulder 25 adapted to rest in the recess 25 to prevent the parts from turning relatively to one another. The plate 6 in the form shown has a notch in its edge and a dial is arranged or laid out on the surface of the base around the plate and bearing the indices or marks 1, 2, M, and S. When the member 6 is oscillated to bring the notch in its edge opposite a mark on the dial, the connection indicated opposite, may be instantly established by swinging the lever 7, the operation of the lever being identically the same for establishing any of the connections for which the switch may be adapted. When the notch is opposite l on the dial, connection is made 2 to battery #1; when opposite 2 connection is to battery #2; when opposite M the batteries are in multiple, and when opposite S the batteries are in series. The base may be cut away to permit ofthe removal of the member 6 with its arms 15.and 24, so that the switch cannot be tampered with.

The advantages of this construction will be a parent to those skilled in this art.

W hat I claim is:

1. In an electric switch, the combination of a base, a terminal member, a contact member, and a switch lever for connecting said members, one of said members being adjustable and means cooperating therewith for effecting connections with a plurality of batteries either singly or in multiple.

2. In an electric switch, the combination of a base, a terminal member, a contact;

member, and a switch lever for connecting said members, one of said members being adjustable and means cooperating therewith forjeffecting connections with a plurality of batteries either singly or in series.

3. In an electric switch, the combination of a base, a terminal member, a contact member, and a switch lever for connecting said, members, one of said members being adjustable and means cooperating therewith .of a' base, having an opening, a stationary main terminal carried by said base. a switch lever pivoted to said main terminal, a contact member, a post projecting therefrom and through said opening, and a contact arm carried by the post of said contact member bene'ath said base and removable through said opening.

5. In an electric switch, the combination of a base, a terminal member, a contact member, a switch lever for connecting said members at will, one of said members being pivoted and means carried beneath said base for affording different electrical connections, depending on the position thereof.

6. In an electric switch, a base member, a pivoted lever carried thereby and adapted to form a part of the electric circuit, a plate pivotally carried by said base, and a projecting stop post carried by said plate for limiting the movement of said switch lever.

7. In an electric switch, the combination of a pivoted contact lever and a pivoted contact plate engaged thereby with means for different electrical connections controlled by said plate.

8. In an electric switch, a base, two battery contacts carried thereby, a pivoted member on one side of the base for engaging either one of said contacts, a post supporting said member and extending through said base, a main terminal and a second pivoted member on the side of the base opposite the first mentioned pivoted member, said secondpivoted member being adapted to connect and disconnect said main terminal and said ost. p -9. In an electric switch, a base, common and separate battery terminals carried thereby, two swinging members for connecting said terminals, one of said members being above and the other being below the base and an extension from the latter through the base.

DAVID E. GRAY.

Witnesses:

L. VREELAND, Rom. S. ALLYN. 

